Chelsea will reportedly sit down this weekend to review documents for a new signing. Chelsea got off to a quick start this summer by confirming the arrival of central defender Tosin Adarabioyo, 26, on a free transfer. The Blues are yet to push any more deals over the line yet, though. READ MORE: Tosin Adarabioyo shares details of the conversation he had with two Chelsea players before joining the clubIt’s been claimed for a while in the media that Palmeiras teenager Estevao Willian is close to signing for Chelsea. If he joins, he’ll become the latest in a long line of South American young tale…